function test() {
  var food = 'apple'

  function a() {
    console.log(food);
    food = 'banana'
  }

  function b() {
    console.log(food);
  }
}

// a() // 'apple'
// b() // 'banana'


function fruit() {
  var food = 'apple'
  var obj = {
    eatFood: function() {
      if (food !== '') {
        console.log('I am eating' + ' ' + food);
        food = ''
      } else {
        console.log('There is nothing');
      }
    },
    pushFood: function(myFood) {
      food = myFood
    }
  }
  return obj
}

var person = fruit()
person.eatFood()
person.eatFood()
person.pushFood('banana')
person.eatFood()